Covering for textile-spinning rolls.



H. E. BELL.

COVERING FOR TEXTILE SPINNING ROLLS.

APPLICATION FILED DEC. ll. I914.

Patented Nov. 23, 1915.

COLUMBIA PLANOGIAPH (IO-.WASHINGTON, n.

UNITED STATES PATENT OFFICE.

HARRY E. BELL, OF PHILADELPHIA, PENNSYLVANIA., ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, TO BELL-REEVES COMPANY, OF WILMINGTON, DELAWARE,

A CORPORATION OF DELAWARE.

COVERING FOR TEXTILE-SPINNING ROLLS.

Specification of Letters Patent.

Patented Nov. 23, 1915.

To all whom it may concern:

Be it known that I, HARRY E. BELL, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Coverings for Textile-Spinning Rolls, of which thefollowing is a specification.

My invention relates to the operative covering means for the rolls orrollers employed in the art of spinning cotton, worsted and otherthreads; and the object of my invention is to provide an improved formof covering material for said rolls that will serve as the frictionproducing means; such covering being in the form of a seamless membermade up of friction material having the desired resiliency, whereby thefinished article will be of a character suitable to produce the workdesired.

My improved composition of matter comprises comminuted leather and corkfirmly bonded together by suitable cementing material; such compositionof matter being subsequently shaped into the desired form to be placedupon the various forms of spinning and drawing rolls.

These and other features of my invention are more fully describedhereinafter, reference being had to the accompanying drawings, in which;

Figure 1, is a perspective view of a section of the improved compositionof matter forming the subject of my invention; Fig. 2, is a perspectiveview of a block of the same from which the cots or tubes employed forthe spinning rolls are shaped; Fig. 3 is a detached perspective view ofa finished cot or tube; Fig. 4, is a perspective view showing the cot ortube illustrated in Fig. 3, applied to one form of spinning roll; Fig.5, is an end view of the same; Fig. 6, is a perspective view of anotherform of spinning roll or roller having a composition cot or tubularcover made in accordance with my invention; Fig. 7 is an end view of thesame, and Fig. 8, is a perspective view of a worsted spinning roll;showing the use of strips of the improved composition of matter as thefriction covering therefor.

The present practice of preparing spinning rollers is to cover the samewith a section of cloth, and then to apply to such cloth a leather cotor tube made of a section of leather which must be seamed at one side inorder to form the same into a tubular element. In the first place, theleather alone 1s not sufficiently resilient, and hence the interposedlining or layer of cloth must be employed which, owing to the heatengendered during the spinning process, dries out and becomes brittleand finally breaks up and drops away from the roller. Furthermore,cotton spinning rollers thus covered not only require expensivemachinery but also experienced workmen to cover iem, and are subject tomany disadvantages as well. The cloth covering on the rollers (owing tothe weight used and the rubbing friction) becomes powdered, as notedabove, and useless in a short time, and the leather cot or tube becomesrough. In the preliminary stages of this breaking up, the roller becomesuneven and is thereby unable to impart proper action or work upon thethreads in process of being spun or drawn. Furthermore, the seaming ofthe leather sleeve or cot makes an objectionable ridge or line in thesurface of the roller, and there is always the danger of the threadholding the cot or tube breaking and thereby causing the cot or tube tobecome loose, and in either case the roller must be re-covered, as anyone of these things spoils the roller for the work for which it isintended.

In covering worsted rolls a strip of soft spongy leather is first placedaround the face of the roller, and this soft or spongy strip is thencovered with a strip of hard, firm leather. The soft leather is used fora cushion, and the hard leather for friction and wear. This form ofroller requires a very heavy weight on each roller in order to get thenecessary amount of drawing, and for that reason requires a considerableamount of horse power to run each spinning frame.

The object of my invention is to provide an improved covering for therolls employed in spinning and drawing cotton, worsted, and otherthreads that avoids all of the defects and disadvantages of the oldcovering structures and provides an efiicient covering for the purposedesired. My improved covering is further a homogeneous body in a singlepiece, thereby avoiding the necessity of putting on two layers as is thecommon practice at the present time, or of employing a seamed tubularmember as the friction-producing covering.

The improved composition of matter forming the subject of my inventionand which I employ as a covering for spinning rollers of various kinds,consists principally of connnin ted leathegcork, united by a siiif'abIecement. I may iise the leather and cork particles with any suitablecement that will hold them together while undergoing further processing,or I may employ a composition of matter in which, in addition to theparticles of leather and cork, I employ a suitable or desirableproportion of Portland cement or equivalent material, and a suitableproportion of shellac or any other material having the samecharacteristics and of equivalent value for the purpose described.

The mass of material is properly mixed together and then pressed byhydraulic or other heavy pressure into mats of suitable dimensions andthickness, approximately one and one-eighth inches thick, or any otherdesired thickness, and these mats are baked under a suitable degree ofheat. The mats thus prepared are cut into suitable strips for coveringworsted rolls, and into blocks from which the cots or tubes for thespinning rolls may be shaped by suitable means.

In the drawings, 1 represents the material forming the subject of myinvention, and 1 indicates the manner in which strips are cut from thesame; which strips are applied to the form of roll shown in Fig. 8.

In Fig. 2, I Show a small block 1 from which the cots or tubes areformed or shaped by suitable tools; the dotted lines indicating one ofsuch cots or tubes.

In Fig. 3, I have shown one form of the finished cot or tube, indicatedat 2, and in Fig. 4, I have shown one form of spinning roller 3. uponwhich such cot or tube is mounted.

Fig. 5, shows an end view of the roller with the cot or tube mountedthereon.

In Fig. 6, I have shown another form of spinning roller 3 having a pairof the cots or tubes 2 mounted thereon, and in Fig. 7, I have shown anend View of such roller. These cots or tubes are shaped by suitablemeans, tools, or machinery from the blocks 1 shown in Fig. 2, and heldto the roller by suitable glue or cement or other means.

In Fig. 8, I have shown another form of spinning roller indicated at 3in which the edges of working surfaces of the rollers are covered withstrips 1 of the improved composition of matter, such as indicated inFig. 1, held to the roller by glue, cement or other suitable means.

\Vhen used in either form, the improved composition of matter formingthe subject of my invention possesses more resiliency than the cloth orsoft leather filler usually employed, and a better frictional surfacethan cots, tubes or other working surfaces for spinning rollers made ofleather.

By my invention I am able to provide a single body as the coveringmember for the roller, avoiding the duplex or double covering commonlyemployed at the present time; the single covering of cork and leathercomposition having the desired resiliency and capable of performing in abetter manner the function for which rolls of this character have beendesigned.

The practice at the present time in the use of these forms of spinningrolls is to provide weighting means whereby the rolls may be held so asto impart sufficient friction of tension to the fiber undergoing thespinning operation, but the improved covering devised by me produces somuch more friction that it is ossible to reduce the amount of weightemployed and thereby reduce the power required to drive the spinningrolls.

My improved composition of matter produces better work; has greaterefficiency than the ordinary surfacing material for spinning rollers; ischeap to manufacture; requires less weight to secure the desiredfrictional engagement with the threads being spun; wears better, and canbe readily renewed or replaced by any person, not requiring skilledworkmen for such purpose.

I claim 1. As a new article of manufacture, a tubular seamless shellhaving a homogeneous body structure and forming a covering for aspinning roller, said shell consisting of granulated cork a filler ofcomininuted leather and a cementitious binding agent including Portlandcement and shellac all condensed and united under heavy pressure.

2. The method herein described of forming tubular shells or coveringsfor spinning rollers and the like, said method consisting in unitingunder heavy pressure a mass of granulated cork, comminuted leather and acementitious binder including Portland cement and shellac; thensubjecting the compacted mass to a baking temperature; and then turningout of the mass a resilient seamless covering of light weight and ofhomogeneous structure.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

HARRY E. BELL.

IVitnesses:

MURRAY C. BOYER, Jos. H. KLEIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

